# API Key Information

An API key is a unique identifier that allows you to access Altum AI’s APIs securely. It’s required in the `x-api-key` header for all API requests to ensure proper authentication.

**How to Get Your API Key**\
In this API the API Key is a free key given to everyone.\
`API Key`: `H2NzzMOieF1CyFpmQHPcT4Woynp450An3FtXbhng`

**Where to Use Your API Key**\
Include the API key in the `x-api-key` header of every API request. Without a valid key, your request will not be authenticated.

**Example Header**:

```plaintext
x-api-key: H2NzzMOieF1CyFpmQHPcT4Woynp450An3FtXbhng
```


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.altum.ai/english/sustainability/epc-api/api-key-information.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.